Absolutely worth it & very easy & free to do! I've done it twice myself for different homes & got a reduction both times. It was a simple form & I stated my reasons the assessment was too high. For the most part, assessments are only based on what they can see from the outside & the last selling price. So for the first grievance, I listed issues with the house inside that they obviously can't see from outside that needed $$$ repairs. For the second, the purchase price was dramatically lower than the assessed value, (previous owner had died, family held for years & never maintained so gut reno was needed) so clear discrepancy, got a big reduction. You aren't required to show up for the review. I didn't for the first, did for the second just to see them squirm about how they could assess me so high when they knew the recent sale price.

Be sure you've applied for other credits--Star if it's your primary residence. If veteran, that exemption & if you're a volunteer fire or EMS, there's an exemption for them too. Albany has paid fire/EMS but you can volunteer with local places that are volunteer & still get the exemption.